How do we know that all our sins are forgiven?

In 1 Peter 2:1-3, we see a reminder that for every child of God, all sins are forgiven because of the precious blood of Christ. Peter emphasizes that the blood of Christ redeems us from our iniquities (1 Peter 1:18-19), which highlights the complete sufficiency of His atoning sacrifice. Scripture affirms this in 1 John 1:9, stating, 'If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.' This reinforces the truth that our forgiveness is secured not by our merit but through the grace and mercy of God as demonstrated in the work of Christ on our behalf. Thus, the assurance of forgiveness based on Christ’s sacrifice invites every believer to trust in His completed work.